Fire detector



FIG. 1 is a perspective view of fire detector exhibiting the design of my invention;

FIG. 2 is a left side view of the fire detector;

FIG. 3 is a front view of the fire detector;

FIG. 4 is a bottom view of the fire detector;

FIG. 5 is a right side view of the fire detector;

FIG. 6 is a top view of the fire detector; and,

FIG. 7 is a rear view of the fire detector. 

I claim the ornamental design for fire detector, as shown. 